For the Dough
3 cups all-purpose flour
8 ounces unsalted butter, cut into small pieces
1 cup sour cream
1 teaspoon baking soda (bicarbonate of soda)
2 egg yolks
For the Filling
2 cups sugar
2 egg whites
3 cups (10 ounces) walnuts, ground (they should be somewhat crunchy in the pie, so do not grind finely)
For the Top
1 egg yolk, to glaze
Handful of walnut halves, to decorate
http://voicethread.com/share/2077518/
Ingredients:
For the Dough
3 cups all-purpose flour
8 ounces unsalted butter, cut into small pieces
1 cup sour cream
1 teaspoon baking soda (bicarbonate of soda)
2 egg yolks
For the Filling
2 cups sugar
2 egg whites
3 cups (10 ounces) walnuts, ground (they should be somewhat crunchy in the pie, so do not grind finely)
For the Top
1 egg yolk, to glaze
Handful of walnut halves, to decorate